[TechAssist] Re: Hitachi 46" PTV

  • From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 26 Jan 2006 18:43:29 -0500

Not sure. They normally cause a dark picture like low emission.

Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx


----- Original Message ----- 
From: "peggs" <peggs@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx>
Sent: Thursday, January 26, 2006 1:39 PM
Subject: [TechAssist] Re: Hitachi 46" PTV


I took a look at the CRT PCB's yesterday,thought I saw one of the
Spark Gaps........ are they little white ones ???
Will they cause the symptoms I'm seeing ???
Peggs


At 04:29 AM 1/26/06, Gemini Computer & TV wrote:
>Try cleaning them first by blowing them out with compressed air. I have
>always been able to clean them, never had to replace a spark gap yet.
>
>Bob Waterman, CET® #RI-28
>Master Technician License #9109
>Service Manager / Parts Manager
>Gemini Computer, TV, & Security Alarms
>(508)695-7302
>(508)695-7769 FAX
>geminitv@xxxxxxxxxxx
>
>
>----- Original Message -----
>From: "peggs" <peggs@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>; <techassist@xxxxxxxxxxxxx>
>Sent: Wednesday, January 25, 2006 7:18 PM
>Subject: [TechAssist] Re: Hitachi 46" PTV
>
>
>got a part number for the spark gaps ???
>
>Peggs
>
>At 11:33 AM 1/25/06, tvservice wrote:
> >the focus block has been an issue on these sets
> >also clean or replace all 6 spark gaps 2 on each of the crt boards
> >then realign gray scale
> >be sure customer settings are in normal/standard
> >
> >Robert
> >tvservice@xxxxxxxxxxxxx
> >H & H Electronics Inc
> >http://supertek.igniteinc.biz
> >
> >----- Original Message -----
> >From: "peggs" <peggs@xxxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Wednesday, January 25, 2006 2:22 PM
> >Subject: [TechAssist] Hitachi 46" PTV
> >
> >
> > > could someone forward this to Alvie Rodgers for me.......
> > > model 46F510
> > > HD Monitor
> > > Oct. 2004
> > >
> > > Dark and Out Of Focus Picture.
> > > Slight increase of the G2 controls(all) has given a Bright and
> > > Balanced(Gray Scale) Picture....... and actually Increasing the Focus
> > > Controls(all) has brought the Picture in focus as well,problem is the
> >Focus
> > > Controls are now wide open(turned all the way up).Picture looks good
> > > now,but how's it going to look in 6 months ???
> > > The Focus Voltage coming from the Fly is 10Kv.
> > > Focus Voltage coming out of the Focus Block(going TO the picture
tubes)
>is
> > > app. 7Kv(controls wide open). Should it be 10Kv with the controls wide
> >open
> > > ???
> > > If so,I may have a bad Focus Block.
> > > If not,my fear is I have 3 Bad Picture tubes...... how do I check them
>???
> > > I guess it's possible I may have 3 Bad CRT Sockets......
> > > Could Low HV cause this ???....... Focus Voltage coming from Fly seems
> > > plenty High enough..... HOT B+ is 115v(I believe... found it coming
from
> >PS
> > > PCB)
> > >
> > > Tritronics does not have a part number for the HV Block......... any
>help
> > > out there ???
> > > The (3) Picture Tubes are all around $172(my cost) from
Tritronics.....
> > > which sounds dirt cheap.... could that be because Hitachi is having a
> > > problem with these tubes ???
> > >
> > > I'm headed to the Hitachi site.... if it's up.
> > >
> > > Peggs
> > > Peggs' Electronics
> > > 1519 West 2nd Street
> > > Owensboro,KY 42301
> > > 270-926-4968
> > > fax 270-686-7399
> > > peggs@xxxxxxxxxxxxx
> > >
> >
>
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